DE10060552A1 - Cutting device and method for changing cutting means - Google Patents

Abstract

The cutter system for cutting cigarettes (3) comprises a rotating mounting (5) to which two or more cutter disks (6) are attached. Independent claims are included for: (a) a method for changing cutter disks using the cutter system; and (b) a machine containing the cutter system.

Description

The invention relates to a cutting device for Cutting articles from the tobacco processing industry strie, especially of cigarettes with a carrier direction in which at least one cutting means can be released is applicable. The invention further relates to a Process for changing cutting tools with which Rod-shaped articles of the tobacco processing industry are cut, the cutting means on a Carrier device are arranged.

In machines for the production of rod-shaped articles the tobacco processing industry and in particular from Cigarettes, such as a filter attachment machine, are various cutting processes such. B. Cutting operations  on filter sticks and cigarettes.

Known cutting devices have a circular knife on that engages with rod-shaped articles of the tobacco processing industry is bringable and übli usually sharpened using a grinding wheel becomes. By using the circular knife and the constant sharpening passes the material of the circular knife lost. The circular knife is to a minimum Usable diameter. After that, this must be replaced become. The machine is usually replaced for the production of rod-shaped articles of tobacco industry stopped and the circular knife of an operator replaced by hand. An experienced one Operator takes 2 minutes to do this.

Such a change of knives is therefore relative time-consuming. It is therefore a task of the present the invention, an effective and quick way of changing cutting means and provide a corresponding cutting device and a method for Changing cutting means to provide the relative can be done quickly, so downtime the machine for the production of rod-shaped articles the tobacco processing industry is as small as possible.

This task is solved by a cutting device for cutting rod-shaped articles of tobacco manufacturing industry with a carrier device on which at least one cutting means is releasably attachable to the is further developed in that at least two cutting are releasably attachable to the carrier device.  

This solution according to the invention makes it possible to To minimize cutting time by changing the Operator before reaching a definable minimum diameter of the currently in use union cutting means at least one further cutting can attach medium to the carrier device so that at least the period of attachment when cutting with tel change can be saved. Preferably cuts only one cutting agent at a time while the further cutting means or the further cutting means successively engaged with the rod-shaped articles to be brought. By the solution according to the invention in particular, it is possible to manufacture the machine of rod-shaped articles of tobacco processing Industry continues to change when changing cutting media to let. The exchange or change from one Cutting means for the new arranged on the carrier Cutting agent can then be done very quickly by just one Handle on the cutting device or an automa table movement of the cutting device.

If the carrier device is pivotable and / or is rotatably supported is a very simple reality tion of the invention possible. The axis of rotation or the The pivot axis lies in particular in a geome trical center of the arranged on the carrier Cutting agent, making a very quick change or a very fast swiveling of cutting tools is possible.

If preferably the cutting means on a slide tenführung are arranged, by means of an approach in each case at least one cutting means in the knives rich of rod-shaped articles of tobacco processing Industry is possible is a particularly easy one  realized cutting device. This can for example, think of a sled guide, that in a kind of linear pre-accession or on a curved path new cutting means in the effective range of the brings rod-shaped items to this after use or wear of the respective cutting means again to convey the effective area, the entire Movement for this is linear or on a curved clock path in one direction. in this connection it is particularly a first in - first out principle (FiFo). If preferably the slide guide a cross slide can be a particularly precise one Adjustment of the cutting means can be achieved.

The cutting means are preferably circular knives, whereby a long service life of the respective circular knife results.

The circular knives are preferably at least effective rotatably supported around an axis of rotation. Furthermore before a sharpening device is preferably provided by means of which sharpens the cutting means arranged in the effective area is cash. The sharpening device preferably comprises a or two sanding pads in the cutting area can be brought by. Preferably is a common turntable provided as a carrier device, on which the cutting means are arranged. Here are preferably 3 cutting tools on a turntable can be applied in a symmetrical arrangement. Through this preferred embodiment of the invention can by sole rotational movement of the carrier an active connection from one cutting medium to the next cutting medium be achieved. In the preferred cross-guidance is it in particular a guided tour that in 2 Directions has movement elements or facial expressions  which enables the movements in one plane. New abrasives are preferably fixed in one position of the carrier device on the carrier direction applied or attached. It is about preferably by a position in which a Cutting agent in the effective area with the rod-shaped Articles of the tobacco processing industry. The Remove or eject used cutting tools preferably also happens in the fixed position the carrier device. Attaching and disassembling or ejecting cutting agents can be done manually or preferably automatically by further devices With manual handling are preferred Precautions are taken to prevent the movement of the Block carrier device when manual Actuation on the carrier device by attaching or Removal of cutting agents happens.

The object is further achieved by a method for changing cutting means with which rod-shaped articles of the tobacco processing industry are cut, the cutting means being arranged on a carrier device, the method comprising the following method steps:

• - Perform a movement of removing the first cutting means from the effective area, and
• - Perform a movement of inserting one second cutting means in the effective area, being before the movement of removing the first cutting agent from the effective area second cutting means applied to the carrier becomes.

By performing the method steps according to the invention is a particularly quick change of cutting media possible, in such a way that the service life of a Machine for the production of rod-shaped articles of the tobacco processing industry and especially from Cigarettes should be kept as low as possible.

The method step of making a move of introducing a first Cutting means in the effective area of the rod-shaped Article instead.

Preferably takes place as the next process step Removing or removing the first cutting means from the carrier device instead. The application and / or Losing weight can preferably be done automatically. By the method according to the invention becomes a kind of stock of ready to use cutting means and in particular from ready-to-use circular knives, whereby by fast movements the one currently in use Cutting agent with a fresh additional cutting agent can be exchanged.

A particularly simple procedure is then given when preferably the insertion movement and the Removal movement Panning movements around a common one Are swivel axis. This is particularly preferred given a rotational symmetry of the cutting means. In particular, 3 cutting agents are used that preferably in a kind of threefold symmetry by one Axis of rotation of the carrier device are arranged.

The insertion movement and the removal are preferred move a move on a through a sled predetermined path. The path is preferably one  closed path. The movements are preferred clocked, one clock period ent of the duration speaks of the time of the introduction of a Cutting agent in the effective area until it is reached a definable truncation value or one by Schär fen of the cutting agent caused and predeterminable Reduction value of the cutting medium is running. Within new cutting means can be attached during this cycle period or used cutting means are removed.

If preferably the movements during operation a machine for the production of rod-shaped articles it has happened to the tobacco processing industry no longer necessary to replace the machine itself to stop the cutting means. That way it is possible to change from a used cutting tool to a new cutting medium in the area of engagement with the rod-shaped articles of the tobacco processing industry make within a period of time in which, for. B. only 10 rod-shaped items uncut past to run. For example, a number of 16,000 produced cigarettes per minute corresponds to that Time interval for changing the cutting material about 19 milliseconds. Preferably the Change of cutting means not cut rod-shaped gene article in a further procedural step worfen.

According to the invention is a machine for the production of rod-shaped articles of the tobacco processing industry with at least one cutting device of the Invention contemporary or preferred embodiment of the invention Mistake. With such a machine will be preferred wise cigarettes made.

The invention is hereinafter without limitation general inventive concept based on execution examples with reference to the drawings wrote on the rest regarding all in the text Details according to the invention not explained in detail is expressly referred to. Show it

Fig. 1 is a schematic view of an apparatus for producing filter cigarettes in front,

Fig. 2 is a schematic representation of part of a corresponding device for producing filter cigarettes, and

Fig. 3 shows a detail from Fig. 2, where components have been pivoted from the Fig. 2.

In Fig. 1, a device according to the invention for producing filter cigarettes, in particular a filter attachment machine 1 , is shown in a front view.

A take-over drum 2 accepts article 3 of double working length from a cigarette rod machine, not shown, for example of the type PROTOS from the applicant. A corresponding device for the manufacture of filter cigarettes is known, for example, from patent application DE 40 08 475 A1 by the applicant, which corresponds to US Pat. No. 5,135,008. In FIG. 1, however, some features of the disclosed in DE 40 08 475 A1 features are varied according to the invention.

On the take-over drum 2 , the articles are conveyed in the transverse axial distance with a center or pitch distance in the direction of an arrow 2 a and transferred to a cutting drum 4 , on which they are cut into two individual articles 7 a and 7 b of equal length by means of a circular knife 6 .

The circular blade 6 is arranged on a carrier 5 and a circular blade holder. 5 A Schleifvorrich device is provided to constantly sharpen the circular knife 6 , which is in the effective range with the articles 3 double use length. This grinding device is not shown in Fig. 1. A corresponding grinding device is disclosed for example in FIGS . 2 and 3. After the circular knife 6 has been correspondingly reduced in diameter by cutting and grinding so that a predeterminable minimum diameter is reached, it is possible by simply rotating the circular knife holder 5 quickly by 120 ° about a pivot axis 61 , which is shown in FIGS. 2 and 3, a new circular knife can be brought into the effective range of Article 3 . The used circular knife 6 can then be exchanged for a new circular knife.

The individual articles are then moved axially apart on a spreading drum 8 , so that there is an axial distance between them. The exploded individual items 7 a and 7 b are passed to a compilation mel 9 . From a magazine 11 , the volume of which can be changed by moving a rear wall 11 a, filter rods 12 reach a cutting drum 13 , are cut from 2 circular knives 14 to filter plugs 16 of double useful length, staggered on a relay drum 17 , from a sliding drum 18 to one Aligned row of plugs one behind the other and deposited by an accelerator drum 19 into the spaces between the rows of cigarettes on the assembly drum 9 . The circular knives 14 can also be quickly replaced in accordance with the invention. A corresponding device is not shown in Fig. 1 at the point where the circular knives 14 are arranged. The component groups or cigarette-filter-cigarette groups 22 are pushed together so that they lie axially close together and are then taken over by a transfer drum 21 .

A covering paper strip 23 is drawn off from a covering paper bobine 24 . The covering paper strip 23 is glued by a gluing device 26 and on a covering roller 27 by a knife drum 28 cut into successive covering sheets 29 . The topping papers are successively attached to successive cigarette filter groups on the transfer drum 21 and rolled around the cigarette filter groups on a roller drum 31 by means of a rolling hand 32 .

The finished double filter cigarettes 33 are fed via an intermediate drum 34 to a cutting drum 36 and are assembled thereon to form individual filter cigarettes 38 a and 38 b by means of a circular knife 37 by cutting centrally through the filter plugs. The circular knife 37 is arranged here on a rail. Furthermore, 2 further circular knives 37 on the circular knife guide 40 have not yet been used. It is also shown on the Kreismes water guide 40 in the right part of a circular knife 37 a that is now removable in this position. At this circular knife 37 a, the reduced diameter compared to the circular knife 37 is indicated. The circular knife guide 40 preferably extends not only in the plane shown in FIG. 1, but also in a plane not shown behind it, in order to achieve a type of endless circular knife guide.

The individual cigarettes 38 a and 38 b are moved axially apart on a spreader drum 39 so that they have an axial distance b from one another. On 2 following test drums 41 and 42 , the individual filter cigarettes 38 a and 38 b are tested in 2 rows for compliance with specified quality features. These are the testing drums 41 and 42, test equipment 41 a and 42 a associated. The test devices 41 a can be devices for head scanning of the cigarettes, for example. With the test devices 42 a, which can be known pneumatic test devices, quality characteristics of the cigarettes such as tightness of the wrapper, degree of ventilation, draft resistance and the like are determined. Inspection devices of this type are known and need not be described in more detail here.

The tested cigarettes 38 a and 38 b are then transferred in two rows to an intermediate drum 43 , from which they arrive at a transfer drum 44 . A row of cigarettes passes from the transfer drum 44 to a further intermediate drum 46 which delivers the cigarettes of this row to a reorientation device 47 . In the illustrated case, this reorientation device is designed as a cone turner 48 , which reverses the axial orientation of the cigarettes conveyed in this row and brings them in accordance with the axial orientation of the cigarettes of the other row. Cone turners of this type are known per se and therefore need no further description here. In this context, reference is made, for example, to the cone turner described in DE-OS 20 20 138.

The reoriented cigarettes are axially offset from the cone turner 48 again to the intermediate drum 46 or an axially offset same drum, which transfers them to a collecting drum 49 and there, one after the other, deposits them in every second trough or receptacle 10 of the collecting drum, so that between successive cigarettes on the collecting drum 49 each have a free recording. In these free recordings between the flipped cigarettes, another intermediate drum 51 deposits the non-flipped cigarettes of the second row, which have been taken over by the transfer drum 44 . The cigarettes are now conveyed in the same axial orientation in a row via an intermediate drum 52 to an off-set belt 53 , from which they are delivered to a mass flow conveyor 54 in a single, single-row row.

With 56 and 57 2 removal drums are designated with which defective or, if desired, correct cigarettes or double cigarettes can be removed from the article stream and thrown onto a conveyor belt 58 , which transfers them to a collecting conveyor 59 , from where they can be tested in the laboratory or can be promoted to the committee.

Fig. 2 shows part of a corresponding device for producing filter cigarettes. From an inter mediate drum 34 double filter cigarettes 33 are transferred to a cutting drum 36 which rotates in the direction of the arrow. The recordings 10 are populated by the double pelfilterigararetten 33 . In FIG. 2 a variant of the invention is shown, are disposed in the circular blade 3 6 and 37 on a circular blade holder 5 in the manner of a triangle. In order to get in alignment from a circular knife to the adjacent circular knife by rotation via the pivot axis 61 , the circular knife holder 5 must be rotated by 120 °. In FIG. 2, an illustration is selected, is in no circular knives 6 and 37 in engagement with the double filter cigarettes 33rd For this reason, in this case, the double filter cigarettes are handed over to the expanding drum 39 without being cut or removed from the expanding drum 39 or from the area behind the respective circular knives 6 and 37 by the cutting drum 36 .

In order to provide a constantly sharp circular knife 6 , a grinding device is provided which comprises two coaxial grinding wheels 60 which are arranged on a holder which itself can be pivoted about a pivot axis 62 . A position of the grinding wheels 60 is shown in FIG. 2, in which the grinding wheels 60 are not in engagement with a circular knife 6 .

FIG. 3 shows the same section from the device for producing filter cigarettes as in FIG. 2, but with a circular knife 6 or 37 standing in the effective area with the double filter cigarettes and cutting them accordingly into single cigarettes. To the left of the circular knife 6 or 37 located in the active position there are 10 individual cigarettes 38 a in the receptacles, further individual cigarettes 38 b being arranged behind them and not shown in FIG. 3. In this position of the circular knife 6 or 37 , the grinding wheels 60 are also pivoted into the sharpening position. The cutting device according to the invention can be used or arranged at a wide variety of locations in machines for producing rod-shaped articles in the tobacco-processing industry, preferably at those points where rod-shaped articles and in particular cigarettes are to be cut. The grinding wheel or the grinding wheels are both fed in with appropriate wear and swiveled out and in again when the knife is changed via the swivel axis 62 . The knives can be driven simultaneously via the respective axes of rotation of the knives or only in the corresponding working position. A corresponding coupling is then used for this. A possibly desired grinding wheel drive can take place, for example, via the swivel axis. To change the circular knife 6 , the grinding wheels 60 are preferably pivoted out of engagement before being pivoted again after changing the knife 6 . A feed movement is preferably used for regrinding. A preferred circular knife 6 , which is unused, has, for example, a diameter of 100 mm, whereas a diameter of 75 mm is a preferably predeterminable value in order to initiate a change of the circular knife. A monitoring device is preferably used which measures the diameter or the edge or the cutting edge of the knife located in the effective area. For this purpose, an optical instrument such as a laser diode with a corresponding photosensitive detector can be used, these two elements being arranged on opposite sides of the knife, or a measuring instrument can be used which measures an electrical resistance.

LIST OF REFERENCE NUMBERS

1

filter attachment

2

transfer drum

2

a Direction of funding

3

items

4

cutting drum

5

Circular blade holder

6

circular blade

7

a, b individual items

8th

spreading drum

9

Assembly drum

10

admission

11

magazine

11

a back wall

12

filter rods

13

cutting drum

14

circular blade

16

filter plug

17

staggering drum

18

pushing drum

19

accelerating drum

21

Transfer drum

22

Cigarette-filter-cigarette group

23

Covering paper strip

24

Belagpapierbobine

26

gluing device

27

covering roller

28

cutterhead

29

covering paper

31

rolling drum

32

roll hand

33

Double filter cigarettes

34

intermediate drum

36

cutting drum

37

circular blade

37

a worn circular knife

38

a, b single cigarettes

39

spreading drum

40

Circular blade guide

41

testing drum

41

a test facility

42

testing drum

42

a test facility

43

intermediate drum

44

Transfer drum

46

intermediate drum

47

reorienter

48

cone turner

49

collecting drum

51

intermediate drum

52

intermediate drum

53

offshoot band

54

Mass flow conveyor

56

removal drum

57

removal drum

58

conveyor belt

59

collecting conveyor

60

grinding wheels

61

swivel axis

62

swivel axis

Claims (15)

1. Cutting device for cutting rod-shaped articles ( 3 , 7 a, 7 b, 16 , 22 , 33 ) of the tobacco processing industry, in particular cigarettes, with a carrier device ( 5 , 40 ) on which at least one cutting means ( 6 , 14 , 37 ) is releasably attachable, characterized in that at least two cutting means ( 6 , 14 , 37 ) can be releasably attached to the carrier device. 2. Cutting device according to claim 1, characterized in that the carrier device ( 5 , 40 ) is pivotally bar and / or rotatably mounted. 3. Cutting device according to claim 1 and / or 2, characterized in that the cutting means ( 6 , 14 , 37 ) are arranged on a slide guide ( 40 ), by means of which approaching at least one cutting means ( 6 , 14 , 37 ) in each Effective range of the rod-shaped articles ( 3 , 7 a, 7 b, 16 , 22 , 33 ) of the tobacco processing industry is made possible. 4. Cutting device according to one or more of claims 1 to 3, characterized in that the slide guide ( 40 ) is a cross slide. 5. Cutting device according to one or more of claims 1 to 4, characterized in that the cutting means ( 6 , 14 , 37 ) are circular knives. 6. Cutting device according to claim 5, characterized records that the circular knife at least in the effective range are rotatably mounted about an axis of rotation. 7. Cutting device according to one or more of claims 1 to 6, characterized in that a sharpening device ( 60 ) is provided, by means of which the cutting means ( 6 , 14 , 37 ) arranged in the effective area can be sharpened. 8. A method for changing cutting means ( 6 , 14 , 37 ) with which rod-shaped articles ( 3 , 7 a, 7 b, 16 , 22 , 33 ) of the tobacco processing industry are cut, the cutting means ( 6 , 14 , 37 ) are arranged on a carrier device ( 5 , 40 ), with the following method steps:

• - Executing a movement of removing the first cutting means ( 6 , 14 , 37 ) from the effective area, and
• - executing a movement for introducing a second cutting means (6, 14, 37) into the active region, wherein prior to movement of Entfer nens the first cutting means (6, 14, 37) out of the active area, the second cutting means (6, 14, 37) is applied to the carrier ( 5 , 40 ).

9. The method according to claim 8, characterized in that the introduction movement and the removal movement is a pivoting movement about a common pivot axis ( 61 ). 10. The method according to claim 8, characterized in that the introduction movement and the removal movement is a movement on a path provided by a carriage ( 40 ). 11. The method according to one or more of claims 8 to 10, characterized in that the movements are clocked, a clock period of the period of the introduction of a cutting agent into the effective area until the point at which a predeterminable truncation worth or one caused by sharpening the cutting material gently and predeterminable reduction value of this Cutting means is reached corresponds. 12. The method according to one or more of claims 8 to 11, characterized in that the movements occur during the operation of a machine for the production of rod-shaped articles ( 3 , 7 a, 7 b, 16 , 22 , 33 ) of the tobacco processing industry. 13. The method according to claim 12, characterized in that when the cutting means ( 6 , 14 , 37 ) not cut rod-shaped articles ( 3 , 7 a, 7 b, 16 , 22 , 33 ) are ejected in a further process step. 14. The method according to one or more of claims 8 to 13, characterized in that the following process step is carried out in advance:

• - Executing a movement of introducing a first cutting means ( 6 , 14 , 37 ) into the effective area of the rod-shaped articles ( 3 , 7 a, 7 b, 16 , 22 , 33 ).

15. Machine for the production of rod-shaped articles the tobacco processing industry with at least one Cutting device according to one or more of the claims che 1 to 7.